Association between sickle cell and β-thalassemia genes and hemoglobin concentration and anemia in children and non-pregnant women in Sierra Leone: ancillary analysis of data from Sierra Leone's 2013 National Micronutrient Survey

Bridging the gaps in newborn screening programmes: Challenges and opportunities to detect haemoglobinopathies in Africa

Background

Haemoglobinopathies, including sickle cell disease and β-thalassaemia, are monogenic disorders with a relatively higher prevalence among malaria-endemic areas in Africa. Despite this prevalence, most African countries lack the necessary resources for diagnosing and managing these debilitating conditions.

Aim

This study provides a critical review of newborn screening for detecting haemoglobinopathies in Africa, highlighting challenges and proposing strategies for improved diagnosis and management.

Methods

A literature search on haemoglobinopathies in Africa was conducted in PubMed, Google Scholar and ScienceDirect, using specific keywords and Boolean operators, including articles published from January 1981 to December 2022.

Results

The data show that sickle cell disease is prevalent among populations in Central and West Africa; however, β-thalassaemia is prevalent among people in the northern parts of Africa. Newborn screening pilot initiatives for haemoglobinopathies were being implemented in Angola, Nigeria, Ghana, the Democratic Republic of Congo and the Republic of Benin. The cost of testing, lack of sufficient and accessible medical records, and inadequacy in healthcare infrastructure pose significant challenges in bridging the gaps in newborn screening. Furthermore, the stigmatisation and lack of awareness of haemoglobinopathies and access to newborn screening programmes pose additional challenges.

Conclusion

This review highlights the challenges associated with haemoglobinopathy testing, effective strategies for mitigating these challenges, and future perspectives for expanding efforts toward detecting and managing these disorders across Africa. Providing affordable diagnostic tools, mobile clinics, government subsidies, education campaigns, and the implementation of electronic medical records systems could help bridge the gaps in newborn screening in Africa.

What this study adds

The study presents a comprehensive view of newborn screening of haemoglobinopathies in Africa, provides a detailed outline of the challenges faced by newborn screening for haemoglobinopathies in Africa, and offers strategies for better diagnosis and care.

"I want to become someone!" gender, reproduction and the moral career of motherhood for women with sickle cell disorders

In Sierra Leone, motherhood is being transformed into a moral career for women with sickle cell disorders. This qualitative participatory study, conducted in 2018, involved thirty-six semi-structured interviews with female care-givers and women with sickle cell disorders. Mothers argued that medical models of disease, combined with caring practices, are means to morally manage ideas of 'spoiled identity' and rethink the sick role, disability and life-outcomes of a potentially serious condition. Mothers encourage their children with sickle cell to stay in education as a route to access formal employment and careers that will not tax their bodies and ensure reproductive timing. Education and employment are framed temporally to ensure a delay so that girls can develop caring relationships and access motherhood safely. Understanding and encouraging the development of motherhood as a moral career, involving embodied hyper-vigilant caring practices, is valuable for the self-identity of mothers, allowing them to see a future for themselves and their children.

"You have to find a caring man, like your father!" gendering sickle cell and refashioning women's moral boundaries in Sierra Leone

Most research on sickle cell disorders has tended to be gender-blind. This qualitative study undertaken in 2018, explores if and how sickle cell disorders become gendered in Sierra Leone through the analytical framework of a feminist ethics of care. It argues that women have to navigate moral blame when they have children with the condition. At the same time women refashion moral boundaries so that gendered norms around childhood and parenting for such children become suspended, in favour of creation of careful spaces. Parental fears of physical and sexual violence mean that gendered sexual norms are enforced for teenage boys as they are encouraged into early adulthood. In contrast, girls are kept in enforced ignorance about the consequences of sickle cell for reproduction and are encouraged to delay motherhood. This is because, as women relate, relationships and giving birth are fraught with embodied dangers and risks of violence.

A Cell-Phone-Based Acoustofluidic Platform for Quantitative Point-of-Care Testing

Acoustofluidic methods, with advantages including simplicity of device design, biocompatible manipulation, and low power consumption, have been touted as promising tools for point-of-care (POC) testing. Here, we report a cell-phone-based acoustofluidic platform that uses acoustic radiation forces to enrich nanoscale analytes and red and green fluorescence nanoparticles (SiO₂@R and G@SiO₂) as probes for POC visual testing. Thus, the color signals from the fluorescent probes are enhanced, and colorimetric sensitivity is significantly improved. As a POC demonstration, the acoustofluidic platform is used to detect hemoglobin (Hb) from human blood, resulting in a rapid and straightforward measurement of normal blood Hb levels. Combining an acoustofluidic-based nanoparticle-concentration platform with cell-phone-based colorimetry, our method introduces a potential pathway toward practical POC testing.